Long-nosed potoroos and southern brown bandicoots have already been reintroduced to Booderee National Park. The biggest threat to the reintroduced quolls are foxes.

Mr Brewster said eradicating foxes completely was not realistic.

"We are not going to live without foxes in the landscape", he said.

"What we want to demonstrate is that we can manage foxes to a level that allows eastern quolls to persist."

Nick Dexter, parks services manager at Booderee National Park, said the park is baited "probably more intensively than just about anywhere in Australia".

He expects the quolls to thrive in the woodlands and forested areas.

"They used to be one of the most common animals in south eastern Australia. In fact, they used to reach plague abundance," Mr Dexter said.

"People would kill hundreds of animals in one night — they were that common — but they have since disappeared entirely from the mainland with the last one being recorded from Sydney, from Vaucluse in 1963."

In her resignation from politics, Kelly O'Dwyer said she feared another miscarriage in Canberra, far from home. Her announcement is shocking for more than just party-political reasons, writes Emma A. Jane.